Machine for turning and boring spools



(No Model.)

J. W. MURRAY.

MACHINE PO R TURNING AND BORING S POOLS. No. 280,755. Pat ted JulyB, 1883.

IIlI/lI/IllllllI/II Ill!!! i n. PETERS. mmou aw w. Washingian. ac.

' UNITED STATES PATENT OFFICE.

JAMES w. MURRAY, or HALIFAX, NovA SooTIA, oANADA, 'ASSIGNOB, BY DIRECT AND MEsNE ASSIGNMENTS, To oHAELEs s. oEAIN AND DANIEL DOROHESTER, JR, or NEWTON, MAssAoHUsETTs;

MACHINE FOR TURNING AND BORING SPOOLS.

sPEcIFIoATIoN forming part of Letters Patent No. 280,755, dated July 3, 1883. Application filed Au ust'ss, 1832. (No modeLI To all whom it may concern.- Be it known that 1, JAMES W. MURRAY, of Halifax, in the county of Halifax and Province of Nova Scotia, Canada, have invented certain Improvements in Machines for Turning and ring Blocks for Spools and other Articles, o 'hich the following is a specification.

This invention has for its object to provide a simple and convenient machine for rapidly IO boring rectangular wooden blocks to be made into spools or other articles requiring a central hole, and also for turning the exterior of the block into the form or approximate form of a spool or other like article requiringboth a 1 IlIIlGCI. surface and a central hole. A

To these ends my invention consists in the improved mechanism whichIwill now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a side elevation and partial longitudinal section of a machine embodying my invention. Fig. 3 represents a transverse section on line 00' m, Fig. 1. Fig. 2 represents 'a plan view.

Figs. 4, 5, and 6 represent sections showing different stages of the operation. Fig. 7 rep resents a section on line y Fig. 4.

The same letters of reference indicate the 7 same parts in all the figures.

3o My improved machine is designed to bore through a square block a central hole, the block being held during the boring in a square hopper, and afterward pushed from the hopper and turned on the outside by a knife, which, while 3 5 the block is rapidly revolved, moves up to it.

The block finished is then dropped.

In the drawings, A represents a substantially vertical hopper,into which the blocks a a a to be bored and turned are fed as they come from the cutting-off saw. Said hopper has lateral openings A A in opposite sides of its lower end, through both of which the plunger hereinafter described moves, and through one of which the blocks a are ejected successively.

B represents the plunger, having journaled in its end a spindle, b, with a face-plate covered with rubber, and adapted to revolve freely 011 its axis. The plunger B is operated by means of a cam, O, which acts 'on'a roller, 0,

spindle, G,

the motion of which is communicated to the plunger B by a square rod, 0, guided in suitable openings in the supporting-frame. The plunger B is guided by a stand, D, and a spring, (I, operates the plunger when the cam recedes.

E is a pulley which drives a spindle, F. This spindle is hollow and adapted to reciprocate longitudinally in its bearings in the frame of the machine.

G represents an inner or boring-bit spindle, which is contained in .the spindle F, and revolves with the latter by means of a slot, f, and feather f ,Which permit the spindle G a greater longitudinal movement than is afforded the spindle F. The spindle G carries on its end adjacent to the hopper aboring-bit, g. In the position shown in Figs. 1 and 3 the spindle G is bearing on the hopper side against a rubberfacedcap, f,screwed onto the outer spindle,F.

When the spindle G moves in the direction of the hopper, the outer spindle, F, is carried along thereby; but when the inner spindle recedes the outer spindle, F, can recede only to the position shown in Figs. 1 and 3, because acollar, 7", onthe spindleF comesto bear against one of the bearings of said spindle. From this position the inner spindle, G, can recede farther to the right and draw the bit 9 entirely into outer spindle, F, as shown in Fig. 5. These motions are controlled by the cam I, which acts on a step, J, in which the inner spindle, G, is journaled. A spring, K, interposed between the supporting-frame and step J,holds the step, and with the same the inner in the position permitted by the 5 cam I.

n represents a knife, which is oscillated by the side of each block after it is ejected from 7 the plunger, as hereinafter described. The motion of this knife is controlled by a cylin-. der-cam, L, against the face of which is pressed, by means of spring Z, a roller, Z, on the end of a rocking lever, l fastened to a rocking shaft, M. On the other end of the latter is fastened an arm, N, carrying on its upper end the knife n, which is placed just opposite the block held by the plunger B and revolving spindle F. It will be seen that the arm N will follow the motion of the arm Z when the cam L permits the same to move. The'face of the cam L receding, the spring Z forces the lever Z to follow the curve of the cam, which brings the knife at up to block a and turns the latter on the outside, when the cam forces back the lever Z and with it the knife, into the original position, and holds them there, say, for three-quarters of a revolution of the camshaft, during which time the other two cams complete their operation.

1? is the camshaft, andQ the gear or pulley, operating cam-shaft a certain number of re'volutions.

The operation of the machine is now as follows: In the positionshown in Figs. 1 and 3 a block, a, is held on the boring-bit g andbetween the rubber on the face plate of the spindle b and the rubber on the cap f of spindle F, the block being held or clamped firmly between said parts by the plunger-spring d. This pressure is to be so regulated that the strain caused by the turning of the block a by the knife 02 will throw no strain on the boring-bit g. The spindle F and plunger B remain in the position shown in Figs. 1 and 3 for the next quarter-revolution of the camshaft P. Meanwhile the cam L operates the knife n, which comes up to the block, shapes the same, and drops back. N ow, the face of cam I recedes, the spring K, acting against the step J, makes the latter follow the shape of the cam I, thereby withdrawing theboring-bit from the block a.

At the same time the cam G acts on the roller 0, drawing plunger B back into the hopper, thereby releasing the finished block a, which drops into a suitable box. The withdrawal of the plunger B is sufficient to enable another block, a, to drop in front of the plunger, as shown in Fig. 5. The cam I, now operating on the step J, moves the inner spindle, G, till it strikes'the cap f on the outer spindle, as shown in Fig. 6. Both spindles now move together till the boring-bit g enters the orifice A in the hopper and finishes boring the lower block, a, in the hopper. After this both plunger B and spindles F and G are moved together by the cams O I to the position shown in Figs. 1 and 3, thus removing the bored blank from the hopper, permitting it to be freely rotated by the spindle F, and holding it in position to be shaped by the knife n. In this manner, at every revolution of the camshaft P one block is bored in the hopper, brought out of the hopper by the plunger and forced by the latter up against the revolving spindle F, revolved rapidly (being held between two rotary faces, one of which is positively rotated,) until the operation of shaping the outside is completed, after which it is dropped.

The knife a may be adapted to give the exact exterior form which it is desired that the successively from 'thehopper in which they are bored, and releasing them. In case it is desired only to bore the blocks, the knife may be omitted without departing from the spirit of my invention.

While the block is being turned by the knife n the boring-bit remains in and completely fills the bored hole in the block, thereby holding the block in place laterally and' forming a support for the wood around the bored hole, thus preventing the liability of cracking or splitting the spool when the latter is'deeply cut by the knife 01. Heretofore spools have been held only at their ends while being turned, and are often split by the action of the knife. I have found that the presence of the bit in the spool, as described, overcomes this objection. A

It 1 is customary to ship spool-blanks from regions where the wood from which they are made -is cheap and abundant to the thread.- factories, and there to finish the blanks into completed spools.

Heretofore the blanks have been simply turned and bored to a cylindrical form of uniform diameter from end to end preparatory to shipment. It will be seen that my improved machine enables the blanks to be turned into a form closely approximating that of the completed spools as readily as into a' plain cylindrical form, thus materially reducing the weight of the blanks and the expense of trans portation, besides reducing the labor and liability of splitting involved in the subsequent the bit, and moved longitudinally into and out of the hopper, whereby the block is bored.

while held in the hopper, a plunger and operating mechanism whereby the plunger is moved out of the hopper simultaneously with the boring-bit, a loosely-rotating clampingsurface on the end of the plunger, and a clamping-surface on the end of a positivelyrotating spindle, whereby the blank is held and rotated after its withdrawal from the hop per, a suitable reducing-knife mechanism for automatically presenting said knife to the rotating blank, and mechanism for withdrawing the plunger to release the blank after the action of the knife, as set forth.

2. I11 a machine for boring and turning spools, the combination of a substantially vertical hopper adapted to contain a series of blocks, a positively-rotated boring-bit, and mechanism for moving the same longitudi- F2S0,755 V 3 nally, whereby the lower block in the hopper is bored, and a reciprocating plunger for removing the bored block from the hopper and allowing the succeeding block to drop into position to be bored, as set forth.

3. The combination of the hopper A, the plunger B, having the journaled face-plate, the longitudinally-movable spindles F G, the former having a face plate or cap, f and the latter having the boring-bit, the turning-knife n, and operating mechanism, substantially as described, whereby, first, the bit is forced into a blank in the hopper and withdrawn with the blank from the hopper; secondly, the

blank is clamped between the face-plate of the plunger and spindle F and rotated by said spindle while transfixed by the bit; and, thirdly, he knife is presented to the rotating block, as set forth.

4. In a machine for boring blocks, the combination of a substantially vertical hopper adapted to support a series of blocks and having an opening at its lower end coinciding with the lower block, a rotated spindle having a boring-bit, mechanism for reciprocating said spindle and bit longitudinally, thus alter-- nately forcing said bit through the opening in the'hopper to bore the lower block and withdrawing said bit from the hopper, a plunger and means for reciprocating the same, whereby the plunger is alternately forced out to e ect the bored block from the hopper upon the bit and withdrawn to release the bored block and permit another block to fall to the bottom of the hopper, and means for releasing the bored block from the bit, as set forth.

5. In a machine for boring and turning spools and other articles, the combination of the substantially vertical hopper having lat-' eral openings in its lower end, the plunger having a journaled spindle, 1), adapted to bear against the inner end of the lower block in the hopper, the positively-rotated hollow spindle F, adapted to reciprocate longitudinally, the

boring-spindle G, having a boring-bit and adapted to reciprocate longitudinally with the spindle F and also independently thereof, the

oscillating carrier having a turning-knife, andmechanism whereby,

the bit has penetrated the lower block in the hopper and the end of the spindle F is pressed against the outer end of said block, the latter being thus clamped between the spindle F and the spindle b of the plunger; secondly, the plunger B and spindles F and G are moved to remove the bored block from the hopper, hold said block for the action of the knife, andpermit it to be rotated by the spindle F; thirdly, the knife is presented to and withdrawn from the rotating block, and finally the plunger and the boring-bit are simultaneously withdrawn from the bores and turned block to release thelatter and permit another block to fall to the bottom of the hopper, as set forth.

6. The combination of the hopper A, the plunger B, having the spindle b and rod 0, the cam G and spring d, whereby said plunger is reciprocated, the rotated hollow spindle F, having the step f and slot f, the boringspindle G within the spindle F, having the bit cam I and spring K,

g and feather f the whereby the spindles F Gare reciprocated, the tool-holding arm N, having the turning knife n, the rock-shaft M, supporting said arm, and provided with the arm I, and the spring Z and cam L, whereby the rock-shaft and the arm N are oscillated, all arranged and oper ating substantially as described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 1st day of August, 1882.

JAMES WILLIAM MURRAY. Witnesses: Y,

CHAS. J. HAGARTY, J AS. W. CALDWELL.

first, the spindles F v and G,-with the boring-bit, are advanced until Correction in Letters Patent No. 280,755.

It is hereby certified that in Letters Patent No. 280,755, granted July 3, 1883, upon the application of James W. Murray, of Halifax, Nova Scotia, Canada, for an improvement in Machines for Turning and Boring Spools, an error appears in line 63, page 3, of the printed specification forming a part of said Patent, requiring correction as follows: The word bores should read bored, and that the specification should be read with this correction therein to make it conform with the record of the casein the Patent Office.

Signed, countersigned, and sealed this 10th day of July, A. D. 1883.

H. M. TELLER, Secretary of the Interior.

[sEAL] Oountersign ed:

E. M. MARBLE,

Commissioner of Patents. 

